cnzdrn - Athlon II X2 240 @ 5824MHz - 13sec 650ms SuperPi - 1M

[unityofsaints]

Win 7 for SP1M, interesting

[cbjaust]

less efficient than current No.2 (https://hwbot.org/submission/963290_mad222_superpi___1m_athlon_ii_x2_240_14sec_422ms/) but 400 and then some MHz extra gets the job done.

[cnzdrn]

It's just a binning result. 

The only way to see what a chip can do is cooling it with ln2

[unityofsaints]

On 2/28/2019 at 10:34 PM, cnzdrn said:

It's just a binning result. 

The only way to see what a chip can do is cooling it with ln2

I agree about LN2 binning for unlocked chips, but is it as true for locked ones? I thought maybe max FSB on ambient would give an indication.

[I.nfraR.ed]

Depends. Usually you can bin for FSB on air/water and in my limited experience they scale pretty linear on LN2, so I can predict what would be the max frequency possible.

There are other factors though - voltage scaling, NB coldbug (yes there are such CPU's), IMC coldbug.

[cnzdrn]

On ambient some chips are really bad. For example I test 2 sempron 140, one can do 408 the other only 395 on ambient, with ln2 the 408 stops at 390 the other see my sub. Another example is one of my 150 that can do 440 fsb but can't go over 5900 max on core frequency. I need to retest that chip. 

[Alpi]

Nice result ! Sooner or later, we'll see ddr3 wr's I guess, when we have ddr2's now. Anyway, I'm so amazed at your work ! I'm really curious !